Maisie Williams: “I was a really cynical teenager and I feel like I’m a nicer, more wholesome person now”DANI BRUBAKER/CONTOUR BY GETTY IMAGES

Maisie Williams has read them. “Them” being arguably the most closely guarded documents in television history, the scripts for the final season of Game of Thrones. The grand denouement of the world’s biggest show won’t reach our screens, infuriatingly, until 2019. But Williams already knows what awaits them all: Daenerys, Jon and Tyrion, as well as Arya, the hugely watchable, utterly badass pint-size assassin she has played, to Emmy-nominated effect, for almost half her life.

“I know stuff now,” the 20-year-old says. “And it’s not just knowing stuff, it’s knowing the end.” (Curled up on a sofa in a hotel in central London, Williams is actually promoting her new animated film, Early Man, but she knows that questions about Game of Thrones are inevitable.) Before…